sys/dev/firewire/firewire.c

   1 /*-
   2  * Copyright (c) 2003 Hidetoshi Shimokawa
   3  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the acknowledgement as bellow:
  16  *
  17  *    This product includes software developed by K. Kobayashi and H. Shimokawa
  18  *
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/types.h>
  41
  42 #include <sys/jail.h>
  43 #include <sys/kernel.h>
  44 #include <sys/module.h>
  45 #include <sys/malloc.h>
  46 #include <sys/conf.h>
  47 #include <sys/sysctl.h>
  48 #include <sys/kthread.h>
  49
  50 #include <sys/kdb.h>
  51
  52 #if defined(__DragonFly__) || __FreeBSD_version < 500000
  53 #include <machine/clock.h>      /* for DELAY() */
  54 #endif
  55
  56 #include <sys/bus.h>            /* used by smbus and newbus */
  57 #include <machine/bus.h>
  58
  59 #ifdef __DragonFly__
  60 #include "firewire.h"
  61 #include "firewirereg.h"
  62 #include "fwmem.h"
  63 #include "iec13213.h"
  64 #include "iec68113.h"
  65 #else
  66 #include <dev/firewire/firewire.h>
  67 #include <dev/firewire/firewirereg.h>
  68 #include <dev/firewire/fwmem.h>
  69 #include <dev/firewire/iec13213.h>
  70 #include <dev/firewire/iec68113.h>
  71 #endif
  72
  73 struct crom_src_buf {
  74         struct crom_src src;
  75         struct crom_chunk root;
  76         struct crom_chunk vendor;
  77         struct crom_chunk hw;
  78 };
  79
  80 int firewire_debug=0, try_bmr=1, hold_count=0;
  81 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
  82         "FireWire driver debug flag");
  83 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
  84 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
  85         "Try to be a bus manager");
  86 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
  87         "Number of count of bus resets for removing lost device information");
  88
  89 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
  90 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
  91
  92 #define FW_MAXASYRTY 4
  93
  94 devclass_t firewire_devclass;
  95
  96 static void firewire_identify   (driver_t *, device_t);
  97 static int firewire_probe       (device_t);
  98 static int firewire_attach      (device_t);
  99 static int firewire_detach      (device_t);
 100 static int firewire_resume      (device_t);
 101 static void firewire_xfer_timeout(void *, int);
 102 #if 0
 103 static int firewire_shutdown    (device_t);
 104 #endif
 105 static device_t firewire_add_child(device_t, u_int, const char *, int);
 106 static void fw_try_bmr (void *);
 107 static void fw_try_bmr_callback (struct fw_xfer *);
 108 static void fw_asystart (struct fw_xfer *);
 109 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
 110 static void fw_bus_probe (struct firewire_comm *);
 111 static void fw_attach_dev (struct firewire_comm *);
 112 static void fw_bus_probe_thread(void *);
 113 #ifdef FW_VMACCESS
 114 static void fw_vmaccess (struct fw_xfer *);
 115 #endif
 116 static int fw_bmr (struct firewire_comm *);
 117 static void fw_dump_hdr(struct fw_pkt *, char *);
 118
 119 static device_method_t firewire_methods[] = {
 120         /* Device interface */
 121         DEVMETHOD(device_identify,      firewire_identify),
 122         DEVMETHOD(device_probe,         firewire_probe),
 123         DEVMETHOD(device_attach,        firewire_attach),
 124         DEVMETHOD(device_detach,        firewire_detach),
 125         DEVMETHOD(device_suspend,       bus_generic_suspend),
 126         DEVMETHOD(device_resume,        firewire_resume),
 127         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
 128
 129         /* Bus interface */
 130         DEVMETHOD(bus_add_child,        firewire_add_child),
 131
 132         DEVMETHOD_END
 133 };
 134 char *linkspeed[] = {
 135         "S100", "S200", "S400", "S800",
 136         "S1600", "S3200", "undef", "undef"
 137 };
 138
 139 static char *tcode_str[] = {
 140         "WREQQ", "WREQB", "WRES",   "undef",
 141         "RREQQ", "RREQB", "RRESQ",  "RRESB",
 142         "CYCS",  "LREQ",  "STREAM", "LRES",
 143         "undef", "undef", "PHY",    "undef"
 144 };
 145
 146 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
 147 #define MAX_GAPHOP 15
 148 u_int gap_cnt[] = { 5,  5,  7,  8, 10, 13, 16, 18,
 149                    21, 24, 26, 29, 32, 35, 37, 40};
 150
 151 static driver_t firewire_driver = {
 152         "firewire",
 153         firewire_methods,
 154         sizeof(struct firewire_softc),
 155 };
 156
 157 /*
 158  * Lookup fwdev by node id.
 159  */
 160 struct fw_device *
 161 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
 162 {
 163         struct fw_device *fwdev;
 164         int s;
 165
 166         s = splfw();
 167         STAILQ_FOREACH(fwdev, &fc->devices, link)
 168                 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
 169                         break;
 170         splx(s);
 171
 172         return fwdev;
 173 }
 174
 175 /*
 176  * Lookup fwdev by EUI64.
 177  */
 178 struct fw_device *
 179 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
 180 {
 181         struct fw_device *fwdev;
 182         int s;
 183
 184         s = splfw();
 185         FW_GLOCK(fc);
 186         STAILQ_FOREACH(fwdev, &fc->devices, link)
 187                 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
 188                         break;
 189         FW_GUNLOCK(fc);
 190         splx(s);
 191
 192         if(fwdev == NULL) return NULL;
 193         if(fwdev->status == FWDEVINVAL) return NULL;
 194         return fwdev;
 195 }
 196
 197 /*
 198  * Async. request procedure for userland application.
 199  */
 200 int
 201 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
 202 {
 203         int err = 0;
 204         struct fw_xferq *xferq;
 205         int len;
 206         struct fw_pkt *fp;
 207         int tcode;
 208         struct tcode_info *info;
 209
 210         if(xfer == NULL) return EINVAL;
 211         if(xfer->hand == NULL){
 212                 printf("hand == NULL\n");
 213                 return EINVAL;
 214         }
 215         fp = &xfer->send.hdr;
 216
 217         tcode = fp->mode.common.tcode & 0xf;
 218         info = &fc->tcode[tcode];
 219         if (info->flag == 0) {
 220                 printf("invalid tcode=%x\n", tcode);
 221                 return EINVAL;
 222         }
 223
 224         /* XXX allow bus explore packets only after bus rest */
 225         if ((fc->status < FWBUSEXPLORE) &&
 226             ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
 227             (fp->mode.rreqq.dest_lo  < 0xf0000000) ||
 228             (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
 229                 xfer->resp = EAGAIN;
 230                 xfer->flag = FWXF_BUSY;
 231                 return (EAGAIN);
 232         }
 233
 234         if (info->flag & FWTI_REQ)
 235                 xferq = fc->atq;
 236         else
 237                 xferq = fc->ats;
 238         len = info->hdr_len;
 239         if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
 240                 printf("send.pay_len > maxrec\n");
 241                 return EINVAL;
 242         }
 243         if (info->flag & FWTI_BLOCK_STR)
 244                 len = fp->mode.stream.len;
 245         else if (info->flag & FWTI_BLOCK_ASY)
 246                 len = fp->mode.rresb.len;
 247         else
 248                 len = 0;
 249         if (len != xfer->send.pay_len){
 250                 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
 251                     len, xfer->send.pay_len, tcode_str[tcode], tcode);
 252                 return EINVAL;
 253         }
 254
 255         if(xferq->start == NULL){
 256                 printf("xferq->start == NULL\n");
 257                 return EINVAL;
 258         }
 259         if(!(xferq->queued < xferq->maxq)){
 260                 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
 261                         xferq->queued);
 262                 return EAGAIN;
 263         }
 264
 265         xfer->tl = -1;
 266         if (info->flag & FWTI_TLABEL) {
 267                 if (fw_get_tlabel(fc, xfer) < 0)
 268                         return EAGAIN;
 269         }
 270
 271         xfer->resp = 0;
 272         xfer->fc = fc;
 273         xfer->q = xferq;
 274
 275         fw_asystart(xfer);
 276         return err;
 277 }
 278 /*
 279  * Wakeup blocked process.
 280  */
 281 void
 282 fw_xferwake(struct fw_xfer *xfer)
 283 {
 284         struct mtx *lock = &xfer->fc->wait_lock;
 285
 286         mtx_lock(lock);
 287         xfer->flag |= FWXF_WAKE;
 288         mtx_unlock(lock);
 289
 290         wakeup(xfer);
 291         return;
 292 }
 293
 294 int
 295 fw_xferwait(struct fw_xfer *xfer)
 296 {
 297         struct mtx *lock = &xfer->fc->wait_lock;
 298         int err = 0;
 299
 300         mtx_lock(lock);
 301         if ((xfer->flag & FWXF_WAKE) == 0)
 302                 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
 303         mtx_unlock(lock);
 304
 305         return (err);
 306 }
 307
 308 /*
 309  * Async. request with given xfer structure.
 310  */
 311 static void
 312 fw_asystart(struct fw_xfer *xfer)
 313 {
 314         struct firewire_comm *fc = xfer->fc;
 315         int s;
 316         s = splfw();
 317         /* Protect from interrupt/timeout */
 318         FW_GLOCK(fc);
 319         xfer->flag = FWXF_INQ;
 320         STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
 321 #if 0
 322         xfer->q->queued ++;
 323 #endif
 324         FW_GUNLOCK(fc);
 325         splx(s);
 326         /* XXX just queue for mbuf */
 327         if (xfer->mbuf == NULL)
 328                 xfer->q->start(fc);
 329         return;
 330 }
 331
 332 static void
 333 firewire_identify(driver_t *driver, device_t parent)
 334 {
 335         BUS_ADD_CHILD(parent, 0, "firewire", -1);
 336 }
 337
 338 static int
 339 firewire_probe(device_t dev)
 340 {
 341         device_set_desc(dev, "IEEE1394(FireWire) bus");
 342         return (0);
 343 }
 344
 345 static void
 346 firewire_xfer_timeout(void *arg, int pending)
 347 {
 348         struct firewire_comm *fc = (struct firewire_comm *)arg;
 349         struct fw_xfer *xfer, *txfer;
 350         struct timeval tv;
 351         struct timeval split_timeout;
 352         STAILQ_HEAD(, fw_xfer) xfer_timeout;
 353         int i, s;
 354
 355         split_timeout.tv_sec = 0;
 356         split_timeout.tv_usec = 200 * 1000;      /* 200 msec */
 357
 358         microtime(&tv);
 359         timevalsub(&tv, &split_timeout);
 360         STAILQ_INIT(&xfer_timeout);
 361
 362         s = splfw();
 363         mtx_lock(&fc->tlabel_lock);
 364         for (i = 0; i < 0x40; i ++) {
 365                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 366                         if ((xfer->flag & FWXF_SENT) == 0)
 367                                 /* not sent yet */
 368                                 break;
 369                         if (timevalcmp(&xfer->tv, &tv, >))
 370                                 /* the rests are newer than this */
 371                                 break;
 372                         device_printf(fc->bdev,
 373                                 "split transaction timeout: "
 374                                 "tl=0x%x flag=0x%02x\n", i, xfer->flag);
 375                         fw_dump_hdr(&xfer->send.hdr, "send");
 376                         xfer->resp = ETIMEDOUT;
 377                         xfer->tl = -1;
 378                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 379                         STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
 380                 }
 381         }
 382         mtx_unlock(&fc->tlabel_lock);
 383         splx(s);
 384         fc->timeout(fc);
 385
 386         STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
 387                 xfer->hand(xfer);
 388 }
 389
 390 #define WATCHDOG_HZ 10
 391 static void
 392 firewire_watchdog(void *arg)
 393 {
 394         struct firewire_comm *fc;
 395         static int watchdog_clock = 0;
 396
 397         fc = (struct firewire_comm *)arg;
 398
 399         /*
 400          * At boot stage, the device interrupt is disabled and
 401          * We encounter a timeout easily. To avoid this,
 402          * ignore clock interrupt for a while.
 403          */
 404         if (watchdog_clock > WATCHDOG_HZ * 15)
 405                 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
 406         else
 407                 watchdog_clock ++;
 408
 409         callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
 410                         (void *)firewire_watchdog, (void *)fc);
 411 }
 412
 413 /*
 414  * The attach routine.
 415  */
 416 static int
 417 firewire_attach(device_t dev)
 418 {
 419         int unit;
 420         struct firewire_softc *sc = device_get_softc(dev);
 421         device_t pa = device_get_parent(dev);
 422         struct firewire_comm *fc;
 423
 424         fc = (struct firewire_comm *)device_get_softc(pa);
 425         sc->fc = fc;
 426         fc->status = FWBUSNOTREADY;
 427
 428         unit = device_get_unit(dev);
 429         if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
 430
 431         fwdev_makedev(sc);
 432
 433         fc->crom_src_buf = (struct crom_src_buf *)malloc(
 434                                 sizeof(struct crom_src_buf),
 435                                 M_FW, M_NOWAIT | M_ZERO);
 436         if (fc->crom_src_buf == NULL) {
 437                 device_printf(fc->dev, "%s: Malloc Failure crom src buff\n", __func__);
 438                 return ENOMEM;
 439         }
 440         fc->topology_map = (struct fw_topology_map *)malloc(
 441                                 sizeof(struct fw_topology_map),
 442                                 M_FW, M_NOWAIT | M_ZERO);
 443         if (fc->topology_map == NULL) {
 444                 device_printf(fc->dev, "%s: Malloc Failure topology map\n", __func__);
 445                 free(fc->crom_src_buf, M_FW);
 446                 return ENOMEM;
 447         }
 448         fc->speed_map = (struct fw_speed_map *)malloc(
 449                                 sizeof(struct fw_speed_map),
 450                                 M_FW, M_NOWAIT | M_ZERO);
 451         if (fc->speed_map == NULL) {
 452                 device_printf(fc->dev, "%s: Malloc Failure speed map\n", __func__);
 453                 free(fc->crom_src_buf, M_FW);
 454                 free(fc->topology_map, M_FW);
 455                 return ENOMEM;
 456         }
 457
 458         mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
 459         mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
 460         CALLOUT_INIT(&fc->timeout_callout);
 461         CALLOUT_INIT(&fc->bmr_callout);
 462         CALLOUT_INIT(&fc->busprobe_callout);
 463         TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc);
 464
 465         callout_reset(&sc->fc->timeout_callout, hz,
 466                         (void *)firewire_watchdog, (void *)sc->fc);
 467
 468         /* create thread */
 469         kproc_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread,
 470                 0, 0, "fw%d_probe", unit);
 471
 472         /* Locate our children */
 473         bus_generic_probe(dev);
 474
 475         /* launch attachement of the added children */
 476         bus_generic_attach(dev);
 477
 478         /* bus_reset */
 479         FW_GLOCK(fc);
 480         fw_busreset(fc, FWBUSNOTREADY);
 481         FW_GUNLOCK(fc);
 482         fc->ibr(fc);
 483
 484         return 0;
 485 }
 486
 487 /*
 488  * Attach it as child.
 489  */
 490 static device_t
 491 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
 492 {
 493         device_t child;
 494         struct firewire_softc *sc;
 495
 496         sc = (struct firewire_softc *)device_get_softc(dev);
 497         child = device_add_child(dev, name, unit);
 498         if (child) {
 499                 device_set_ivars(child, sc->fc);
 500                 device_probe_and_attach(child);
 501         }
 502
 503         return child;
 504 }
 505
 506 static int
 507 firewire_resume(device_t dev)
 508 {
 509         struct firewire_softc *sc;
 510
 511         sc = (struct firewire_softc *)device_get_softc(dev);
 512         sc->fc->status = FWBUSNOTREADY;
 513
 514         bus_generic_resume(dev);
 515
 516         return(0);
 517 }
 518
 519 /*
 520  * Dettach it.
 521  */
 522 static int
 523 firewire_detach(device_t dev)
 524 {
 525         struct firewire_softc *sc;
 526         struct firewire_comm *fc;
 527         struct fw_device *fwdev, *fwdev_next;
 528         int err;
 529
 530         sc = (struct firewire_softc *)device_get_softc(dev);
 531         fc = sc->fc;
 532         mtx_lock(&fc->wait_lock);
 533         fc->status = FWBUSDETACH;
 534         wakeup(fc);
 535         if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
 536                 printf("firewire probe thread didn't die\n");
 537         mtx_unlock(&fc->wait_lock);
 538
 539         if (fc->arq !=0 && fc->arq->maxq > 0)
 540                 fw_drain_txq(fc);
 541
 542         if ((err = fwdev_destroydev(sc)) != 0)
 543                 return err;
 544
 545         if ((err = bus_generic_detach(dev)) != 0)
 546                 return err;
 547
 548         callout_stop(&fc->timeout_callout);
 549         callout_stop(&fc->bmr_callout);
 550         callout_stop(&fc->busprobe_callout);
 551
 552         /* XXX xfer_free and untimeout on all xfers */
 553         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
 554                                                         fwdev = fwdev_next) {
 555                 fwdev_next = STAILQ_NEXT(fwdev, link);
 556                 free(fwdev, M_FW);
 557         }
 558         free(fc->topology_map, M_FW);
 559         free(fc->speed_map, M_FW);
 560         free(fc->crom_src_buf, M_FW);
 561
 562         mtx_destroy(&fc->tlabel_lock);
 563         mtx_destroy(&fc->wait_lock);
 564         return(0);
 565 }
 566 #if 0
 567 static int
 568 firewire_shutdown( device_t dev )
 569 {
 570         return 0;
 571 }
 572 #endif
 573
 574
 575 static void
 576 fw_xferq_drain(struct fw_xferq *xferq)
 577 {
 578         struct fw_xfer *xfer;
 579
 580         while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
 581                 STAILQ_REMOVE_HEAD(&xferq->q, link);
 582 #if 0
 583                 xferq->queued --;
 584 #endif
 585                 xfer->resp = EAGAIN;
 586                 xfer->flag = FWXF_SENTERR;
 587                 fw_xfer_done(xfer);
 588         }
 589 }
 590
 591 void
 592 fw_drain_txq(struct firewire_comm *fc)
 593 {
 594         struct fw_xfer *xfer, *txfer;
 595         STAILQ_HEAD(, fw_xfer) xfer_drain;
 596         int i;
 597
 598         STAILQ_INIT(&xfer_drain);
 599
 600         FW_GLOCK(fc);
 601         fw_xferq_drain(fc->atq);
 602         fw_xferq_drain(fc->ats);
 603         for(i = 0; i < fc->nisodma; i++)
 604                 fw_xferq_drain(fc->it[i]);
 605         FW_GUNLOCK(fc);
 606
 607         mtx_lock(&fc->tlabel_lock);
 608         for (i = 0; i < 0x40; i ++)
 609                 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
 610                         if (firewire_debug)
 611                                 printf("tl=%d flag=%d\n", i, xfer->flag);
 612                         xfer->tl = -1;
 613                         xfer->resp = EAGAIN;
 614                         STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
 615                         STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
 616                 }
 617         mtx_unlock(&fc->tlabel_lock);
 618
 619         STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
 620                 xfer->hand(xfer);
 621 }
 622
 623 static void
 624 fw_reset_csr(struct firewire_comm *fc)
 625 {
 626         int i;
 627
 628         CSRARC(fc, STATE_CLEAR)
 629                         = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 630         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 631         CSRARC(fc, NODE_IDS) = 0x3f;
 632
 633         CSRARC(fc, TOPO_MAP + 8) = 0;
 634         fc->irm = -1;
 635
 636         fc->max_node = -1;
 637
 638         for(i = 2; i < 0x100/4 - 2 ; i++){
 639                 CSRARC(fc, SPED_MAP + i * 4) = 0;
 640         }
 641         CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
 642         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 643         CSRARC(fc, RESET_START) = 0;
 644         CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
 645         CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
 646         CSRARC(fc, CYCLE_TIME) = 0x0;
 647         CSRARC(fc, BUS_TIME) = 0x0;
 648         CSRARC(fc, BUS_MGR_ID) = 0x3f;
 649         CSRARC(fc, BANDWIDTH_AV) = 4915;
 650         CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
 651         CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
 652         CSRARC(fc, IP_CHANNELS) = (1 << 31);
 653
 654         CSRARC(fc, CONF_ROM) = 0x04 << 24;
 655         CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
 656         CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
 657                                 1 << 28 | 0xff << 16 | 0x09 << 8;
 658         CSRARC(fc, CONF_ROM + 0xc) = 0;
 659
 660 /* DV depend CSRs see blue book */
 661         CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
 662         CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
 663
 664         CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
 665         CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
 666 }
 667
 668 static void
 669 fw_init_crom(struct firewire_comm *fc)
 670 {
 671         struct crom_src *src;
 672
 673         src = &fc->crom_src_buf->src;
 674         bzero(src, sizeof(struct crom_src));
 675
 676         /* BUS info sample */
 677         src->hdr.info_len = 4;
 678
 679         src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
 680
 681         src->businfo.irmc = 1;
 682         src->businfo.cmc = 1;
 683         src->businfo.isc = 1;
 684         src->businfo.bmc = 1;
 685         src->businfo.pmc = 0;
 686         src->businfo.cyc_clk_acc = 100;
 687         src->businfo.max_rec = fc->maxrec;
 688         src->businfo.max_rom = MAXROM_4;
 689 #define FW_GENERATION_CHANGEABLE 2
 690         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 691         src->businfo.link_spd = fc->speed;
 692
 693         src->businfo.eui64.hi = fc->eui.hi;
 694         src->businfo.eui64.lo = fc->eui.lo;
 695
 696         STAILQ_INIT(&src->chunk_list);
 697
 698         fc->crom_src = src;
 699         fc->crom_root = &fc->crom_src_buf->root;
 700 }
 701
 702 static void
 703 fw_reset_crom(struct firewire_comm *fc)
 704 {
 705         struct crom_src_buf *buf;
 706         struct crom_src *src;
 707         struct crom_chunk *root;
 708
 709         buf =  fc->crom_src_buf;
 710         src = fc->crom_src;
 711         root = fc->crom_root;
 712
 713         STAILQ_INIT(&src->chunk_list);
 714
 715         bzero(root, sizeof(struct crom_chunk));
 716         crom_add_chunk(src, NULL, root, 0);
 717         crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
 718         /* private company_id */
 719         crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
 720 #ifdef __DragonFly__
 721         crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
 722         crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
 723 #else
 724         crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
 725         crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
 726 #endif
 727         mtx_lock(&prison0.pr_mtx);
 728         crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
 729         mtx_unlock(&prison0.pr_mtx);
 730 }
 731
 732 /*
 733  * Called after bus reset.
 734  */
 735 void
 736 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
 737 {
 738         struct firewire_dev_comm *fdc;
 739         struct crom_src *src;
 740         device_t *devlistp;
 741         uint32_t *newrom;
 742         int i, devcnt;
 743
 744         FW_GLOCK_ASSERT(fc);
 745         if (fc->status == FWBUSMGRELECT)
 746                 callout_stop(&fc->bmr_callout);
 747
 748         fc->status = new_status;
 749         fw_reset_csr(fc);
 750
 751         if (fc->status == FWBUSNOTREADY)
 752                 fw_init_crom(fc);
 753
 754         fw_reset_crom(fc);
 755
 756         if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
 757                 for( i = 0 ; i < devcnt ; i++)
 758                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
 759                                 fdc = device_get_softc(devlistp[i]);
 760                                 if (fdc->post_busreset != NULL)
 761                                         fdc->post_busreset(fdc);
 762                         }
 763                 free(devlistp, M_TEMP);
 764         }
 765
 766         src = &fc->crom_src_buf->src;
 767         /*
 768          * If the old config rom needs to be overwritten,
 769          * bump the businfo.generation indicator to
 770          * indicate that we need to be reprobed
 771          * See 1394a-2000 8.3.2.5.4 for more details.
 772          * generation starts at 2 and rolls over at 0xF
 773          * back to 2.
 774          *
 775          * A generation of 0 indicates a device
 776          * that is not 1394a-2000 compliant.
 777          * A generation of 1 indicates a device that
 778          * does not change it's Bus Info Block or
 779          * Configuration ROM.
 780          */
 781 #define FW_MAX_GENERATION 0xF
 782         newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
 783         src = &fc->crom_src_buf->src;
 784         crom_load(src, newrom, CROMSIZE);
 785         if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
 786                 if ( src->businfo.generation++ > FW_MAX_GENERATION )
 787                         src->businfo.generation = FW_GENERATION_CHANGEABLE;
 788                 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
 789         }
 790         free(newrom, M_FW);
 791
 792 }
 793
 794 /* Call once after reboot */
 795 void fw_init(struct firewire_comm *fc)
 796 {
 797         int i;
 798 #ifdef FW_VMACCESS
 799         struct fw_xfer *xfer;
 800         struct fw_bind *fwb;
 801 #endif
 802
 803         fc->arq->queued = 0;
 804         fc->ars->queued = 0;
 805         fc->atq->queued = 0;
 806         fc->ats->queued = 0;
 807
 808         fc->arq->buf = NULL;
 809         fc->ars->buf = NULL;
 810         fc->atq->buf = NULL;
 811         fc->ats->buf = NULL;
 812
 813         fc->arq->flag = 0;
 814         fc->ars->flag = 0;
 815         fc->atq->flag = 0;
 816         fc->ats->flag = 0;
 817
 818         STAILQ_INIT(&fc->atq->q);
 819         STAILQ_INIT(&fc->ats->q);
 820
 821         for( i = 0 ; i < fc->nisodma ; i ++ ){
 822                 fc->it[i]->queued = 0;
 823                 fc->ir[i]->queued = 0;
 824
 825                 fc->it[i]->start = NULL;
 826                 fc->ir[i]->start = NULL;
 827
 828                 fc->it[i]->buf = NULL;
 829                 fc->ir[i]->buf = NULL;
 830
 831                 fc->it[i]->flag = FWXFERQ_STREAM;
 832                 fc->ir[i]->flag = FWXFERQ_STREAM;
 833
 834                 STAILQ_INIT(&fc->it[i]->q);
 835                 STAILQ_INIT(&fc->ir[i]->q);
 836         }
 837
 838         fc->arq->maxq = FWMAXQUEUE;
 839         fc->ars->maxq = FWMAXQUEUE;
 840         fc->atq->maxq = FWMAXQUEUE;
 841         fc->ats->maxq = FWMAXQUEUE;
 842
 843         for( i = 0 ; i < fc->nisodma ; i++){
 844                 fc->ir[i]->maxq = FWMAXQUEUE;
 845                 fc->it[i]->maxq = FWMAXQUEUE;
 846         }
 847
 848         CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
 849         CSRARC(fc, TOPO_MAP + 4) = 1;
 850         CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
 851         CSRARC(fc, SPED_MAP + 4) = 1;
 852
 853         STAILQ_INIT(&fc->devices);
 854
 855 /* Initialize Async handlers */
 856         STAILQ_INIT(&fc->binds);
 857         for( i = 0 ; i < 0x40 ; i++){
 858                 STAILQ_INIT(&fc->tlabels[i]);
 859         }
 860
 861 /* DV depend CSRs see blue book */
 862 #if 0
 863         CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
 864         CSRARC(fc, oPCR) = 0x8000007a;
 865         for(i = 4 ; i < 0x7c/4 ; i+=4){
 866                 CSRARC(fc, i + oPCR) = 0x8000007a;
 867         }
 868
 869         CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
 870         CSRARC(fc, iPCR) = 0x803f0000;
 871         for(i = 4 ; i < 0x7c/4 ; i+=4){
 872                 CSRARC(fc, i + iPCR) = 0x0;
 873         }
 874 #endif
 875
 876         fc->crom_src_buf = NULL;
 877
 878 #ifdef FW_VMACCESS
 879         xfer = fw_xfer_alloc();
 880         if(xfer == NULL) return;
 881
 882         fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
 883         if(fwb == NULL){
 884                 fw_xfer_free(xfer);
 885                 return;
 886         }
 887         xfer->hand = fw_vmaccess;
 888         xfer->fc = fc;
 889         xfer->sc = NULL;
 890
 891         fwb->start_hi = 0x2;
 892         fwb->start_lo = 0;
 893         fwb->addrlen = 0xffffffff;
 894         fwb->xfer = xfer;
 895         fw_bindadd(fc, fwb);
 896 #endif
 897 }
 898
 899 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
 900     ((fwb)->end < (addr))?1:0)
 901
 902 /*
 903  * To lookup bound process from IEEE1394 address.
 904  */
 905 struct fw_bind *
 906 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
 907 {
 908         u_int64_t addr;
 909         struct fw_bind *tfw, *r = NULL;
 910
 911         addr = ((u_int64_t)dest_hi << 32) | dest_lo;
 912         FW_GLOCK(fc);
 913         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 914                 if (BIND_CMP(addr, tfw) == 0) {
 915                         r = tfw;
 916                         break;
 917                 }
 918         FW_GUNLOCK(fc);
 919         return(r);
 920 }
 921
 922 /*
 923  * To bind IEEE1394 address block to process.
 924  */
 925 int
 926 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
 927 {
 928         struct fw_bind *tfw, *prev = NULL;
 929         int r = 0;
 930
 931         if (fwb->start > fwb->end) {
 932                 printf("%s: invalid range\n", __func__);
 933                 return EINVAL;
 934         }
 935
 936         FW_GLOCK(fc);
 937         STAILQ_FOREACH(tfw, &fc->binds, fclist) {
 938                 if (fwb->end < tfw->start)
 939                         break;
 940                 prev = tfw;
 941         }
 942         if (prev == NULL)
 943                 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
 944         else if (prev->end < fwb->start)
 945                 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
 946         else {
 947                 printf("%s: bind failed\n", __func__);
 948                 r = EBUSY;
 949         }
 950         FW_GUNLOCK(fc);
 951         return (r);
 952 }
 953
 954 /*
 955  * To free IEEE1394 address block.
 956  */
 957 int
 958 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
 959 {
 960 #if 0
 961         struct fw_xfer *xfer, *next;
 962 #endif
 963         struct fw_bind *tfw;
 964         int s;
 965
 966         s = splfw();
 967         FW_GLOCK(fc);
 968         STAILQ_FOREACH(tfw, &fc->binds, fclist)
 969                 if (tfw == fwb) {
 970                         STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
 971                         goto found;
 972                 }
 973
 974         printf("%s: no such binding\n", __func__);
 975         FW_GUNLOCK(fc);
 976         splx(s);
 977         return (1);
 978 found:
 979 #if 0
 980         /* shall we do this? */
 981         for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
 982                 next = STAILQ_NEXT(xfer, link);
 983                 fw_xfer_free(xfer);
 984         }
 985         STAILQ_INIT(&fwb->xferlist);
 986 #endif
 987         FW_GUNLOCK(fc);
 988
 989         splx(s);
 990         return 0;
 991 }
 992
 993 int
 994 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
 995     int slen, int rlen, int n,
 996     struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
 997 {
 998         int i, s;
 999         struct fw_xfer *xfer;
1000
1001         for (i = 0; i < n; i++) {
1002                 xfer = fw_xfer_alloc_buf(type, slen, rlen);
1003                 if (xfer == NULL)
1004                         return (n);
1005                 xfer->fc = fc;
1006                 xfer->sc = sc;
1007                 xfer->hand = hand;
1008                 s = splfw();
1009                 STAILQ_INSERT_TAIL(q, xfer, link);
1010                 splx(s);
1011         }
1012         return (n);
1013 }
1014
1015 void
1016 fw_xferlist_remove(struct fw_xferlist *q)
1017 {
1018         struct fw_xfer *xfer, *next;
1019
1020         for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
1021                 next = STAILQ_NEXT(xfer, link);
1022                 fw_xfer_free_buf(xfer);
1023         }
1024         STAILQ_INIT(q);
1025 }
1026 /*
1027  * dump packet header
1028  */
1029 static void
1030 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1031 {
1032         printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1033             "src=0x%03x\n", prefix,
1034             fp->mode.hdr.dst & 0x3f,
1035             fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1036             fp->mode.hdr.tcode, fp->mode.hdr.pri,
1037             fp->mode.hdr.src);
1038 }
1039
1040 /*
1041  * To free transaction label.
1042  */
1043 static void
1044 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1045 {
1046         struct fw_xfer *txfer;
1047         int s;
1048
1049         s = splfw();
1050         mtx_lock(&fc->tlabel_lock);
1051         if (xfer->tl < 0) {
1052                 mtx_unlock(&fc->tlabel_lock);
1053                 return;
1054         }
1055 #if 1   /* make sure the label is allocated */
1056         STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1057                 if(txfer == xfer)
1058                         break;
1059         if (txfer == NULL) {
1060                 printf("%s: the xfer is not in the queue "
1061                     "(tlabel=%d, flag=0x%x)\n",
1062                     __FUNCTION__, xfer->tl, xfer->flag);
1063                 fw_dump_hdr(&xfer->send.hdr, "send");
1064                 fw_dump_hdr(&xfer->recv.hdr, "recv");
1065                 kdb_backtrace();
1066                 mtx_unlock(&fc->tlabel_lock);
1067                 splx(s);
1068                 return;
1069         }
1070 #endif
1071
1072         STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1073         xfer->tl = -1;
1074         mtx_unlock(&fc->tlabel_lock);
1075         splx(s);
1076         return;
1077 }
1078
1079 /*
1080  * To obtain XFER structure by transaction label.
1081  */
1082 static struct fw_xfer *
1083 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1084 {
1085         struct fw_xfer *xfer;
1086         int s = splfw();
1087         int req;
1088
1089         mtx_lock(&fc->tlabel_lock);
1090         STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1091                 if(xfer->send.hdr.mode.hdr.dst == node) {
1092                         mtx_unlock(&fc->tlabel_lock);
1093                         splx(s);
1094                         KASSERT(xfer->tl == tlabel,
1095                                 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1096                         /* extra sanity check */
1097                         req = xfer->send.hdr.mode.hdr.tcode;
1098                         if (xfer->fc->tcode[req].valid_res != tcode) {
1099                                 printf("%s: invalid response tcode "
1100                                     "(0x%x for 0x%x)\n", __FUNCTION__,
1101                                     tcode, req);
1102                                 return(NULL);
1103                         }
1104
1105                         if (firewire_debug > 2)
1106                                 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1107                         return(xfer);
1108                 }
1109         mtx_unlock(&fc->tlabel_lock);
1110         if (firewire_debug > 1)
1111                 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1112         splx(s);
1113         return(NULL);
1114 }
1115
1116 /*
1117  * To allocate IEEE1394 XFER structure.
1118  */
1119 struct fw_xfer *
1120 fw_xfer_alloc(struct malloc_type *type)
1121 {
1122         struct fw_xfer *xfer;
1123
1124         xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1125         if (xfer == NULL)
1126                 return xfer;
1127
1128         xfer->malloc = type;
1129
1130         return xfer;
1131 }
1132
1133 struct fw_xfer *
1134 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1135 {
1136         struct fw_xfer *xfer;
1137
1138         xfer = fw_xfer_alloc(type);
1139         if (xfer == NULL)
1140                 return(NULL);
1141         xfer->send.pay_len = send_len;
1142         xfer->recv.pay_len = recv_len;
1143         if (send_len > 0) {
1144                 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1145                 if (xfer->send.payload == NULL) {
1146                         fw_xfer_free(xfer);
1147                         return(NULL);
1148                 }
1149         }
1150         if (recv_len > 0) {
1151                 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1152                 if (xfer->recv.payload == NULL) {
1153                         if (xfer->send.payload != NULL)
1154                                 free(xfer->send.payload, type);
1155                         fw_xfer_free(xfer);
1156                         return(NULL);
1157                 }
1158         }
1159         return(xfer);
1160 }
1161
1162 /*
1163  * IEEE1394 XFER post process.
1164  */
1165 void
1166 fw_xfer_done(struct fw_xfer *xfer)
1167 {
1168         if (xfer->hand == NULL) {
1169                 printf("hand == NULL\n");
1170                 return;
1171         }
1172
1173         if (xfer->fc == NULL)
1174                 panic("fw_xfer_done: why xfer->fc is NULL?");
1175
1176         fw_tl_free(xfer->fc, xfer);
1177         xfer->hand(xfer);
1178 }
1179
1180 void
1181 fw_xfer_unload(struct fw_xfer* xfer)
1182 {
1183         int s;
1184
1185         if(xfer == NULL ) return;
1186         if(xfer->flag & FWXF_INQ){
1187                 printf("fw_xfer_free FWXF_INQ\n");
1188                 s = splfw();
1189                 FW_GLOCK(xfer->fc);
1190                 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1191 #if 0
1192                 xfer->q->queued --;
1193 #endif
1194                 FW_GUNLOCK(xfer->fc);
1195                 splx(s);
1196         }
1197         if (xfer->fc != NULL) {
1198                 /*
1199                  * Ensure that any tlabel owner can't access this
1200                  * xfer after it's freed.
1201                  */
1202                 fw_tl_free(xfer->fc, xfer);
1203 #if 1
1204                 if(xfer->flag & FWXF_START)
1205                         /*
1206                          * This could happen if:
1207                          *  1. We call fwohci_arcv() before fwohci_txd().
1208                          *  2. firewire_watch() is called.
1209                          */
1210                         printf("fw_xfer_free FWXF_START\n");
1211 #endif
1212         }
1213         xfer->flag = FWXF_INIT;
1214         xfer->resp = 0;
1215 }
1216 /*
1217  * To free IEEE1394 XFER structure.
1218  */
1219 void
1220 fw_xfer_free_buf( struct fw_xfer* xfer)
1221 {
1222         if (xfer == NULL) {
1223                 printf("%s: xfer == NULL\n", __func__);
1224                 return;
1225         }
1226         fw_xfer_unload(xfer);
1227         if(xfer->send.payload != NULL){
1228                 free(xfer->send.payload, xfer->malloc);
1229         }
1230         if(xfer->recv.payload != NULL){
1231                 free(xfer->recv.payload, xfer->malloc);
1232         }
1233         free(xfer, xfer->malloc);
1234 }
1235
1236 void
1237 fw_xfer_free( struct fw_xfer* xfer)
1238 {
1239         if (xfer == NULL) {
1240                 printf("%s: xfer == NULL\n", __func__);
1241                 return;
1242         }
1243         fw_xfer_unload(xfer);
1244         free(xfer, xfer->malloc);
1245 }
1246
1247 void
1248 fw_asy_callback_free(struct fw_xfer *xfer)
1249 {
1250 #if 0
1251         printf("asyreq done flag=0x%02x resp=%d\n",
1252                                 xfer->flag, xfer->resp);
1253 #endif
1254         fw_xfer_free(xfer);
1255 }
1256
1257 /*
1258  * To configure PHY.
1259  */
1260 static void
1261 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1262 {
1263         struct fw_xfer *xfer;
1264         struct fw_pkt *fp;
1265
1266         fc->status = FWBUSPHYCONF;
1267
1268         xfer = fw_xfer_alloc(M_FWXFER);
1269         if (xfer == NULL)
1270                 return;
1271         xfer->fc = fc;
1272         xfer->hand = fw_asy_callback_free;
1273
1274         fp = &xfer->send.hdr;
1275         fp->mode.ld[1] = 0;
1276         if (root_node >= 0)
1277                 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1278         if (gap_count >= 0)
1279                 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1280         fp->mode.ld[2] = ~fp->mode.ld[1];
1281 /* XXX Dangerous, how to pass PHY packet to device driver */
1282         fp->mode.common.tcode |= FWTCODE_PHY;
1283
1284         if (firewire_debug)
1285                 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1286                                         __func__, root_node, gap_count);
1287         fw_asyreq(fc, -1, xfer);
1288 }
1289
1290 /*
1291  * Dump self ID.
1292  */
1293 static void
1294 fw_print_sid(uint32_t sid)
1295 {
1296         union fw_self_id *s;
1297         s = (union fw_self_id *) &sid;
1298         if ( s->p0.sequel ) {
1299                 if ( s->p1.sequence_num == FW_SELF_ID_PAGE0 ) {
1300                         printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1301                                 "p8:%d p9:%d p10:%d\n",
1302                                 s->p1.phy_id, s->p1.port3, s->p1.port4,
1303                                 s->p1.port5, s->p1.port6, s->p1.port7,
1304                                 s->p1.port8, s->p1.port9, s->p1.port10);
1305                 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1 ){
1306                         printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1307                                 s->p2.phy_id, s->p2.port11, s->p2.port12,
1308                                 s->p2.port13, s->p2.port14, s->p2.port15);
1309                 } else {
1310                         printf("node:%d Unknown Self ID Page number %d\n",
1311                                 s->p1.phy_id, s->p1.sequence_num);
1312                 }
1313         } else {
1314                 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1315                         " p0:%d p1:%d p2:%d i:%d m:%d\n",
1316                         s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1317                         s->p0.phy_speed, s->p0.contender,
1318                         s->p0.power_class, s->p0.port0, s->p0.port1,
1319                         s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1320         }
1321 }
1322
1323 /*
1324  * To receive self ID.
1325  */
1326 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1327 {
1328         uint32_t *p;
1329         union fw_self_id *self_id;
1330         u_int i, j, node, c_port = 0, i_branch = 0;
1331
1332         fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1333         fc->max_node = fc->nodeid & 0x3f;
1334         CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1335         fc->status = FWBUSCYMELECT;
1336         fc->topology_map->crc_len = 2;
1337         fc->topology_map->generation ++;
1338         fc->topology_map->self_id_count = 0;
1339         fc->topology_map->node_count = 0;
1340         fc->speed_map->generation ++;
1341         fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1342         self_id = &fc->topology_map->self_id[0];
1343         for(i = 0; i < fc->sid_cnt; i ++){
1344                 if (sid[1] != ~sid[0]) {
1345                         device_printf(fc->bdev, "%s: ERROR invalid self-id packet\n",
1346                                                 __func__);
1347                         sid += 2;
1348                         continue;
1349                 }
1350                 *self_id = *((union fw_self_id *)sid);
1351                 fc->topology_map->crc_len++;
1352                 if(self_id->p0.sequel == 0){
1353                         fc->topology_map->node_count ++;
1354                         c_port = 0;
1355                         if (firewire_debug)
1356                                 fw_print_sid(sid[0]);
1357                         node = self_id->p0.phy_id;
1358                         if(fc->max_node < node){
1359                                 fc->max_node = self_id->p0.phy_id;
1360                         }
1361                         /* XXX I'm not sure this is the right speed_map */
1362                         fc->speed_map->speed[node][node]
1363                                         = self_id->p0.phy_speed;
1364                         for (j = 0; j < node; j ++) {
1365                                 fc->speed_map->speed[j][node]
1366                                         = fc->speed_map->speed[node][j]
1367                                         = min(fc->speed_map->speed[j][j],
1368                                                         self_id->p0.phy_speed);
1369                         }
1370                         if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1371                           (self_id->p0.link_active && self_id->p0.contender)) {
1372                                 fc->irm = self_id->p0.phy_id;
1373                         }
1374                         if(self_id->p0.port0 >= 0x2){
1375                                 c_port++;
1376                         }
1377                         if(self_id->p0.port1 >= 0x2){
1378                                 c_port++;
1379                         }
1380                         if(self_id->p0.port2 >= 0x2){
1381                                 c_port++;
1382                         }
1383                 }
1384                 if(c_port > 2){
1385                         i_branch += (c_port - 2);
1386                 }
1387                 sid += 2;
1388                 self_id++;
1389                 fc->topology_map->self_id_count ++;
1390         }
1391         /* CRC */
1392         fc->topology_map->crc = fw_crc16(
1393                         (uint32_t *)&fc->topology_map->generation,
1394                         fc->topology_map->crc_len * 4);
1395         fc->speed_map->crc = fw_crc16(
1396                         (uint32_t *)&fc->speed_map->generation,
1397                         fc->speed_map->crc_len * 4);
1398         /* byteswap and copy to CSR */
1399         p = (uint32_t *)fc->topology_map;
1400         for (i = 0; i <= fc->topology_map->crc_len; i++)
1401                 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1402         p = (uint32_t *)fc->speed_map;
1403         CSRARC(fc, SPED_MAP) = htonl(*p++);
1404         CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1405         /* don't byte-swap uint8_t array */
1406         bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1407
1408         fc->max_hop = fc->max_node - i_branch;
1409         device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1410                         fc->max_node + 1, fc->max_hop,
1411                         (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1412                         fc->irm,
1413                         (fc->irm == fc->nodeid) ? " (me) " : "");
1414
1415         if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1416                 if (fc->irm == fc->nodeid) {
1417                         fc->status = FWBUSMGRDONE;
1418                         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1419                         fw_bmr(fc);
1420                 } else {
1421                         fc->status = FWBUSMGRELECT;
1422                         callout_reset(&fc->bmr_callout, hz/8,
1423                                 (void *)fw_try_bmr, (void *)fc);
1424                 }
1425         } else
1426                 fc->status = FWBUSMGRDONE;
1427
1428         callout_reset(&fc->busprobe_callout, hz/4,
1429                         (void *)fw_bus_probe, (void *)fc);
1430 }
1431
1432 /*
1433  * To probe devices on the IEEE1394 bus.
1434  */
1435 static void
1436 fw_bus_probe(struct firewire_comm *fc)
1437 {
1438         int s;
1439         struct fw_device *fwdev;
1440
1441         s = splfw();
1442         fc->status = FWBUSEXPLORE;
1443
1444         /* Invalidate all devices, just after bus reset. */
1445         if (firewire_debug)
1446                 device_printf(fc->bdev, "%s:"
1447                         "iterate and invalidate all nodes\n",
1448                         __func__);
1449         STAILQ_FOREACH(fwdev, &fc->devices, link)
1450                 if (fwdev->status != FWDEVINVAL) {
1451                         fwdev->status = FWDEVINVAL;
1452                         fwdev->rcnt = 0;
1453                         if (firewire_debug)
1454                                 device_printf(fc->bdev, "%s:"
1455                                         "Invalidate Dev ID: %08x%08x\n",
1456                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1457                 } else {
1458                         if (firewire_debug)
1459                                 device_printf(fc->bdev, "%s:"
1460                                         "Dev ID: %08x%08x already invalid\n",
1461                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1462                 }
1463         splx(s);
1464
1465         wakeup((void *)fc);
1466 }
1467
1468 static int
1469 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1470     uint32_t *quad, int length)
1471 {
1472         struct fw_xfer *xfer;
1473         uint32_t tmp;
1474         int i, error;
1475
1476         for (i = 0; i < length; i ++, offset += sizeof(uint32_t)) {
1477                 xfer = fwmem_read_quad(fwdev, NULL, -1,
1478                     0xffff, 0xf0000000 | offset, (void *)&tmp,
1479                     fw_xferwake);
1480                 if (xfer == NULL)
1481                         return (-1);
1482                 fw_xferwait(xfer);
1483
1484                 if (xfer->resp == 0)
1485                         quad[i] = ntohl(tmp);
1486
1487                 error = xfer->resp;
1488                 fw_xfer_free(xfer);
1489                 if (error)
1490                         return (error);
1491         }
1492         return (0);
1493 }
1494
1495
1496 static int
1497 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1498 {
1499         int err, i, off;
1500         struct csrdirectory *dir;
1501         struct csrreg *reg;
1502
1503         dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1504         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1505             (uint32_t *)dir, 1);
1506         if (err)
1507                 return (-1);
1508
1509         offset += sizeof(uint32_t);
1510         reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1511         err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1512             (uint32_t *)reg, dir->crc_len);
1513         if (err)
1514                 return (-1);
1515
1516         /* XXX check CRC */
1517
1518         off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1519         if (fwdev->rommax < off)
1520                 fwdev->rommax = off;
1521
1522         if (recur == 0)
1523                 return (0);
1524
1525         for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1526                 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1527                         recur = 1;
1528                 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1529                         recur = 0;
1530                 else
1531                         continue;
1532
1533                 off = offset + reg[i].val * sizeof(uint32_t);
1534                 if (off > CROMSIZE) {
1535                         printf("%s: invalid offset %d\n", __FUNCTION__, off);
1536                         return(-1);
1537                 }
1538                 err = fw_explore_csrblock(fwdev, off, recur);
1539                 if (err)
1540                         return (-1);
1541         }
1542         return (0);
1543 }
1544
1545 static int
1546 fw_explore_node(struct fw_device *dfwdev)
1547 {
1548         struct firewire_comm *fc;
1549         struct fw_device *fwdev, *pfwdev, *tfwdev;
1550         uint32_t *csr;
1551         struct csrhdr *hdr;
1552         struct bus_info *binfo;
1553         int err, node;
1554         uint32_t speed_test = 0;
1555
1556         fc = dfwdev->fc;
1557         csr = dfwdev->csrrom;
1558         node = dfwdev->dst;
1559
1560         /* First quad */
1561         err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1562         if (err) {
1563                 device_printf(fc->bdev, "%s: node%d: explore_read_quads failure\n",
1564                     __func__, node);
1565                 dfwdev->status = FWDEVINVAL;
1566                 return (-1);
1567         }
1568         hdr = (struct csrhdr *)&csr[0];
1569         if (hdr->info_len != 4) {
1570                 if (firewire_debug)
1571                         device_printf(fc->bdev, "%s: node%d: wrong bus info len(%d)\n",
1572                             __func__, node, hdr->info_len);
1573                 dfwdev->status = FWDEVINVAL;
1574                 return (-1);
1575         }
1576
1577         /* bus info */
1578         err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1579         if (err) {
1580                 device_printf(fc->bdev, "%s: node%d: error reading 0x04\n",
1581                     __func__, node);
1582                 dfwdev->status = FWDEVINVAL;
1583                 return (-1);
1584         }
1585         binfo = (struct bus_info *)&csr[1];
1586         if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1587                 device_printf(fc->bdev, "%s: node%d: invalid bus name 0x%08x\n",
1588                     __func__, node, binfo->bus_name);
1589                 dfwdev->status = FWDEVINVAL;
1590                 return (-1);
1591         }
1592
1593         if (firewire_debug)
1594                 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1595                                         "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1596                                         "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1597                                         "generation(%d) link_spd(%d)\n",
1598                                         __func__, node,
1599                                         binfo->irmc, binfo->cmc, binfo->isc,
1600                                         binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1601                                         binfo->max_rec, binfo->max_rom,
1602                                         binfo->generation, binfo->link_spd);
1603
1604         STAILQ_FOREACH(fwdev, &fc->devices, link)
1605                 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1606                         break;
1607         if (fwdev == NULL) {
1608                 /* new device */
1609                 fwdev = malloc(sizeof(struct fw_device), M_FW,
1610                                                 M_NOWAIT | M_ZERO);
1611                 if (fwdev == NULL) {
1612                         device_printf(fc->bdev, "%s: node%d: no memory\n",
1613                                         __func__, node);
1614                         return (-1);
1615                 }
1616                 fwdev->fc = fc;
1617                 fwdev->eui = binfo->eui64;
1618                 fwdev->dst = dfwdev->dst;
1619                 fwdev->maxrec = dfwdev->maxrec;
1620                 fwdev->status = dfwdev->status;
1621
1622                 /*
1623                  * Pre-1394a-2000 didn't have link_spd in
1624                  * the Bus Info block, so try and use the
1625                  * speed map value.
1626                  * 1394a-2000 compliant devices only use
1627                  * the Bus Info Block link spd value, so
1628                  * ignore the speed map alltogether. SWB
1629                  */
1630                 if ( binfo->link_spd == FWSPD_S100 /* 0 */) {
1631                         device_printf(fc->bdev, "%s: "
1632                                 "Pre 1394a-2000 detected\n",
1633                                 __func__);
1634                         fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1635                 } else
1636                         fwdev->speed = binfo->link_spd;
1637                 /*
1638                  * Test this speed with a read to the CSRROM.
1639                  * If it fails, slow down the speed and retry.
1640                  */
1641                 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1642                         err = fw_explore_read_quads(fwdev, CSRROMOFF,
1643                                         &speed_test, 1);
1644                         if (err) {
1645                                 device_printf(fc->bdev, "%s: fwdev->speed(%s)"
1646                                                 " decremented due to negotiation\n",
1647                                                 __func__,
1648                                                 linkspeed[fwdev->speed]);
1649                                 fwdev->speed--;
1650                         } else
1651                                 break;
1652
1653                 }
1654
1655                 /*
1656                  * If the fwdev is not found in the
1657                  * fc->devices TAILQ, then we will add it.
1658                  */
1659                 pfwdev = NULL;
1660                 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1661                         if (tfwdev->eui.hi > fwdev->eui.hi ||
1662                                 (tfwdev->eui.hi == fwdev->eui.hi &&
1663                                 tfwdev->eui.lo > fwdev->eui.lo))
1664                                 break;
1665                         pfwdev = tfwdev;
1666                 }
1667                 if (pfwdev == NULL)
1668                         STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1669                 else
1670                         STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1671
1672                 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1673                     linkspeed[fwdev->speed],
1674                     fwdev->eui.hi, fwdev->eui.lo);
1675         } else {
1676                 fwdev->dst = node;
1677                 fwdev->status = FWDEVINIT;
1678                 /* unchanged ? */
1679                 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1680                         if (firewire_debug)
1681                                 device_printf(fc->dev, "node%d: crom unchanged\n", node);
1682                         return (0);
1683                 }
1684         }
1685
1686         bzero(&fwdev->csrrom[0], CROMSIZE);
1687
1688         /* copy first quad and bus info block */
1689         bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1690         fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1691
1692         err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1693
1694         if (err) {
1695                 if (firewire_debug)
1696                         device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1697                                         __func__, err);
1698                 fwdev->status = FWDEVINVAL;
1699                 fwdev->csrrom[0] = 0;
1700         }
1701         return (err);
1702
1703 }
1704
1705 /*
1706  * Find the self_id packet for a node, ignoring sequels.
1707  */
1708 static union fw_self_id *
1709 fw_find_self_id(struct firewire_comm *fc, int node)
1710 {
1711         uint32_t i;
1712         union fw_self_id *s;
1713
1714         for (i = 0; i < fc->topology_map->self_id_count; i++) {
1715                 s = &fc->topology_map->self_id[i];
1716                 if (s->p0.sequel)
1717                         continue;
1718                 if (s->p0.phy_id == node)
1719                         return s;
1720         }
1721         return 0;
1722 }
1723
1724 static void
1725 fw_explore(struct firewire_comm *fc)
1726 {
1727         int node, err, s, i, todo, todo2, trys;
1728         char nodes[63];
1729         struct fw_device dfwdev;
1730         union fw_self_id *fwsid;
1731
1732         todo = 0;
1733         /* setup dummy fwdev */
1734         dfwdev.fc = fc;
1735         dfwdev.speed = 0;
1736         dfwdev.maxrec = 8; /* 512 */
1737         dfwdev.status = FWDEVINIT;
1738
1739         for (node = 0; node <= fc->max_node; node ++) {
1740                 /* We don't probe myself and linkdown nodes */
1741                 if (node == fc->nodeid) {
1742                         if (firewire_debug)
1743                                 device_printf(fc->bdev, "%s:"
1744                                         "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1745                                         __func__, node, fc->nodeid, fc->max_node);
1746                         continue;
1747                 } else if (firewire_debug) {
1748                         device_printf(fc->bdev, "%s:"
1749                                 "node(%d) fc->max_node(%d) found\n",
1750                                 __func__, node, fc->max_node);
1751                 }
1752                 fwsid = fw_find_self_id(fc, node);
1753                 if (!fwsid || !fwsid->p0.link_active) {
1754                         if (firewire_debug)
1755                                 device_printf(fc->bdev, "%s: node%d: link down\n",
1756                                                         __func__, node);
1757                         continue;
1758                 }
1759                 nodes[todo++] = node;
1760         }
1761
1762         s = splfw();
1763         for (trys = 0; todo > 0 && trys < 3; trys ++) {
1764                 todo2 = 0;
1765                 for (i = 0; i < todo; i ++) {
1766                         dfwdev.dst = nodes[i];
1767                         err = fw_explore_node(&dfwdev);
1768                         if (err)
1769                                 nodes[todo2++] = nodes[i];
1770                         if (firewire_debug)
1771                                 device_printf(fc->bdev, "%s: node %d, err = %d\n",
1772                                         __func__, node, err);
1773                 }
1774                 todo = todo2;
1775         }
1776         splx(s);
1777 }
1778
1779
1780 static void
1781 fw_bus_probe_thread(void *arg)
1782 {
1783         struct firewire_comm *fc;
1784
1785         fc = (struct firewire_comm *)arg;
1786
1787         mtx_lock(&fc->wait_lock);
1788         while (fc->status != FWBUSDETACH) {
1789                 if (fc->status == FWBUSEXPLORE) {
1790                         mtx_unlock(&fc->wait_lock);
1791                         fw_explore(fc);
1792                         fc->status = FWBUSEXPDONE;
1793                         if (firewire_debug)
1794                                 printf("bus_explore done\n");
1795                         fw_attach_dev(fc);
1796                         mtx_lock(&fc->wait_lock);
1797                 }
1798                 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1799         }
1800         mtx_unlock(&fc->wait_lock);
1801         kproc_exit(0);
1802 }
1803
1804 /*
1805  * To attach sub-devices layer onto IEEE1394 bus.
1806  */
1807 static void
1808 fw_attach_dev(struct firewire_comm *fc)
1809 {
1810         struct fw_device *fwdev, *next;
1811         int i, err;
1812         device_t *devlistp;
1813         int devcnt;
1814         struct firewire_dev_comm *fdc;
1815
1816         for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1817                 next = STAILQ_NEXT(fwdev, link);
1818                 if (fwdev->status == FWDEVINIT) {
1819                         fwdev->status = FWDEVATTACHED;
1820                 } else if (fwdev->status == FWDEVINVAL) {
1821                         fwdev->rcnt ++;
1822                         if (firewire_debug)
1823                                 device_printf(fc->bdev, "%s:"
1824                                         "fwdev->rcnt(%d), hold_count(%d)\n",
1825                                         __func__, fwdev->rcnt, hold_count);
1826                         if (fwdev->rcnt > hold_count) {
1827                                 /*
1828                                  * Remove devices which have not been seen
1829                                  * for a while.
1830                                  */
1831                                 device_printf(fc->bdev, "%s:"
1832                                         "Removing missing device ID:%08x%08x\n",
1833                                         __func__, fwdev->eui.hi, fwdev->eui.lo);
1834                                 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1835                                     link);
1836                                 free(fwdev, M_FW);
1837                         }
1838                 }
1839         }
1840
1841         err = device_get_children(fc->bdev, &devlistp, &devcnt);
1842         if( err == 0 ) {
1843                 for( i = 0 ; i < devcnt ; i++){
1844                         if (device_get_state(devlistp[i]) >= DS_ATTACHED)  {
1845                                 fdc = device_get_softc(devlistp[i]);
1846                                 if (fdc->post_explore != NULL)
1847                                         fdc->post_explore(fdc);
1848                         }
1849                 }
1850                 free(devlistp, M_TEMP);
1851         }
1852
1853         return;
1854 }
1855
1856 /*
1857  * To allocate unique transaction label.
1858  */
1859 static int
1860 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1861 {
1862         u_int dst, new_tlabel;
1863         struct fw_xfer *txfer;
1864         int s;
1865
1866         dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1867         s = splfw();
1868         mtx_lock(&fc->tlabel_lock);
1869         new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1870         STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1871                 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1872                                 break;
1873         if(txfer == NULL) {
1874                 fc->last_tlabel[dst] = new_tlabel;
1875                 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1876                 mtx_unlock(&fc->tlabel_lock);
1877                 splx(s);
1878                 xfer->tl = new_tlabel;
1879                 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1880                 if (firewire_debug > 1)
1881                         printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1882                 return (new_tlabel);
1883         }
1884         mtx_unlock(&fc->tlabel_lock);
1885         splx(s);
1886
1887         if (firewire_debug > 1)
1888                 printf("fw_get_tlabel: no free tlabel\n");
1889         return (-1);
1890 }
1891
1892 static void
1893 fw_rcv_copy(struct fw_rcv_buf *rb)
1894 {
1895         struct fw_pkt *pkt;
1896         u_char *p;
1897         struct tcode_info *tinfo;
1898         u_int res, i, len, plen;
1899
1900         rb->xfer->recv.spd = rb->spd;
1901
1902         pkt = (struct fw_pkt *)rb->vec->iov_base;
1903         tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1904
1905         /* Copy header */
1906         p = (u_char *)&rb->xfer->recv.hdr;
1907         bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1908         rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1909         rb->vec->iov_len -= tinfo->hdr_len;
1910
1911         /* Copy payload */
1912         p = (u_char *)rb->xfer->recv.payload;
1913         res = rb->xfer->recv.pay_len;
1914
1915         /* special handling for RRESQ */
1916         if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1917             p != NULL && res >= sizeof(uint32_t)) {
1918                 *(uint32_t *)p = pkt->mode.rresq.data;
1919                 rb->xfer->recv.pay_len = sizeof(uint32_t);
1920                 return;
1921         }
1922
1923         if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1924                 return;
1925
1926         plen = pkt->mode.rresb.len;
1927
1928         for (i = 0; i < rb->nvec; i++, rb->vec++) {
1929                 len = MIN(rb->vec->iov_len, plen);
1930                 if (res < len) {
1931                         device_printf(rb->fc->bdev, "%s:"
1932                                 " rcv buffer(%d) is %d bytes short.\n",
1933                                 __func__, rb->xfer->recv.pay_len, len - res);
1934                         len = res;
1935                 }
1936                 bcopy(rb->vec->iov_base, p, len);
1937                 p += len;
1938                 res -= len;
1939                 plen -= len;
1940                 if (res == 0 || plen == 0)
1941                         break;
1942         }
1943         rb->xfer->recv.pay_len -= res;
1944
1945 }
1946
1947 /*
1948  * Generic packet receiving process.
1949  */
1950 void
1951 fw_rcv(struct fw_rcv_buf *rb)
1952 {
1953         struct fw_pkt *fp, *resfp;
1954         struct fw_bind *bind;
1955         int tcode;
1956         int i, len, oldstate;
1957 #if 0
1958         {
1959                 uint32_t *qld;
1960                 int i;
1961                 qld = (uint32_t *)buf;
1962                 printf("spd %d len:%d\n", spd, len);
1963                 for( i = 0 ; i <= len && i < 32; i+= 4){
1964                         printf("0x%08x ", ntohl(qld[i/4]));
1965                         if((i % 16) == 15) printf("\n");
1966                 }
1967                 if((i % 16) != 15) printf("\n");
1968         }
1969 #endif
1970         fp = (struct fw_pkt *)rb->vec[0].iov_base;
1971         tcode = fp->mode.common.tcode;
1972         switch (tcode) {
1973         case FWTCODE_WRES:
1974         case FWTCODE_RRESQ:
1975         case FWTCODE_RRESB:
1976         case FWTCODE_LRES:
1977                 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1978                                 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1979                 if(rb->xfer == NULL) {
1980                         device_printf(rb->fc->bdev, "%s: "
1981                                 "unknown response "
1982                                 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1983                                 __func__,
1984                                 tcode_str[tcode], tcode,
1985                                 fp->mode.hdr.src,
1986                                 fp->mode.hdr.tlrt >> 2,
1987                                 fp->mode.hdr.tlrt & 3,
1988                                 fp->mode.rresq.data);
1989 #if 0
1990                         printf("try ad-hoc work around!!\n");
1991                         rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1992                                         (fp->mode.hdr.tlrt >> 2)^3);
1993                         if (rb->xfer == NULL) {
1994                                 printf("no use...\n");
1995                                 return;
1996                         }
1997 #else
1998                         return;
1999 #endif
2000                 }
2001                 fw_rcv_copy(rb);
2002                 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
2003                         rb->xfer->resp = EIO;
2004                 else
2005                         rb->xfer->resp = 0;
2006                 /* make sure the packet is drained in AT queue */
2007                 oldstate = rb->xfer->flag;
2008                 rb->xfer->flag = FWXF_RCVD;
2009                 switch (oldstate) {
2010                 case FWXF_SENT:
2011                         fw_xfer_done(rb->xfer);
2012                         break;
2013                 case FWXF_START:
2014 #if 0
2015                         if (firewire_debug)
2016                                 printf("not sent yet tl=%x\n", rb->xfer->tl);
2017 #endif
2018                         break;
2019                 default:
2020                         device_printf(rb->fc->bdev, "%s: "
2021                                 "unexpected flag 0x%02x\n", __func__, rb->xfer->flag);
2022                 }
2023                 return;
2024         case FWTCODE_WREQQ:
2025         case FWTCODE_WREQB:
2026         case FWTCODE_RREQQ:
2027         case FWTCODE_RREQB:
2028         case FWTCODE_LREQ:
2029                 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
2030                         fp->mode.rreqq.dest_lo);
2031                 if(bind == NULL){
2032                         device_printf(rb->fc->bdev, "%s: "
2033                                 "Unknown service addr 0x%04x:0x%08x %s(%x)"
2034 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2035                                 " src=0x%x data=%lx\n",
2036 #else
2037                                 " src=0x%x data=%x\n",
2038 #endif
2039                                 __func__,
2040                                 fp->mode.wreqq.dest_hi,
2041                                 fp->mode.wreqq.dest_lo,
2042                                 tcode_str[tcode], tcode,
2043                                 fp->mode.hdr.src,
2044                                 ntohl(fp->mode.wreqq.data));
2045
2046                         if (rb->fc->status == FWBUSINIT) {
2047                                 device_printf(rb->fc->bdev, "%s: cannot respond(bus reset)!\n",
2048                                                 __func__);
2049                                 return;
2050                         }
2051                         rb->xfer = fw_xfer_alloc(M_FWXFER);
2052                         if(rb->xfer == NULL){
2053                                 return;
2054                         }
2055                         rb->xfer->send.spd = rb->spd;
2056                         rb->xfer->send.pay_len = 0;
2057                         resfp = &rb->xfer->send.hdr;
2058                         switch (tcode) {
2059                         case FWTCODE_WREQQ:
2060                         case FWTCODE_WREQB:
2061                                 resfp->mode.hdr.tcode = FWTCODE_WRES;
2062                                 break;
2063                         case FWTCODE_RREQQ:
2064                                 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2065                                 break;
2066                         case FWTCODE_RREQB:
2067                                 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2068                                 break;
2069                         case FWTCODE_LREQ:
2070                                 resfp->mode.hdr.tcode = FWTCODE_LRES;
2071                                 break;
2072                         }
2073                         resfp->mode.hdr.dst = fp->mode.hdr.src;
2074                         resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2075                         resfp->mode.hdr.pri = fp->mode.hdr.pri;
2076                         resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2077                         resfp->mode.rresb.extcode = 0;
2078                         resfp->mode.rresb.len = 0;
2079 /*
2080                         rb->xfer->hand = fw_xferwake;
2081 */
2082                         rb->xfer->hand = fw_xfer_free;
2083                         if(fw_asyreq(rb->fc, -1, rb->xfer)){
2084                                 fw_xfer_free(rb->xfer);
2085                                 return;
2086                         }
2087                         return;
2088                 }
2089                 len = 0;
2090                 for (i = 0; i < rb->nvec; i ++)
2091                         len += rb->vec[i].iov_len;
2092                 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2093                 if (rb->xfer == NULL) {
2094                         device_printf(rb->fc->bdev, "%s: "
2095                                 "Discard a packet for this bind.\n",
2096                                 __func__);
2097                         return;
2098                 }
2099                 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2100                 fw_rcv_copy(rb);
2101                 rb->xfer->hand(rb->xfer);
2102                 return;
2103 #if 0 /* shouldn't happen ?? or for GASP */
2104         case FWTCODE_STREAM:
2105         {
2106                 struct fw_xferq *xferq;
2107
2108                 xferq = rb->fc->ir[sub];
2109 #if 0
2110                 printf("stream rcv dma %d len %d off %d spd %d\n",
2111                         sub, len, off, spd);
2112 #endif
2113                 if(xferq->queued >= xferq->maxq) {
2114                         printf("receive queue is full\n");
2115                         return;
2116                 }
2117                 /* XXX get xfer from xfer queue, we don't need copy for
2118                         per packet mode */
2119                 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2120                                                 vec[0].iov_len);
2121                 if (rb->xfer == NULL)
2122                         return;
2123                 fw_rcv_copy(rb)
2124                 s = splfw();
2125                 xferq->queued++;
2126                 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2127                 splx(s);
2128                 sc = device_get_softc(rb->fc->bdev);
2129 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2130                 if (&xferq->rsel.si_pid != 0)
2131 #else
2132                 if (SEL_WAITING(&xferq->rsel))
2133 #endif
2134                         selwakeuppri(&xferq->rsel, FWPRI);
2135                 if (xferq->flag & FWXFERQ_WAKEUP) {
2136                         xferq->flag &= ~FWXFERQ_WAKEUP;
2137                         wakeup((caddr_t)xferq);
2138                 }
2139                 if (xferq->flag & FWXFERQ_HANDLER) {
2140                         xferq->hand(xferq);
2141                 }
2142                 return;
2143                 break;
2144         }
2145 #endif
2146         default:
2147                 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2148                                 __func__, tcode);
2149                 break;
2150         }
2151 }
2152
2153 /*
2154  * Post process for Bus Manager election process.
2155  */
2156 static void
2157 fw_try_bmr_callback(struct fw_xfer *xfer)
2158 {
2159         struct firewire_comm *fc;
2160         int bmr;
2161
2162         if (xfer == NULL)
2163                 return;
2164         fc = xfer->fc;
2165         if (xfer->resp != 0)
2166                 goto error;
2167         if (xfer->recv.payload == NULL)
2168                 goto error;
2169         if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2170                 goto error;
2171
2172         bmr = ntohl(xfer->recv.payload[0]);
2173         if (bmr == 0x3f)
2174                 bmr = fc->nodeid;
2175
2176         CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2177         fw_xfer_free_buf(xfer);
2178         fw_bmr(fc);
2179         return;
2180
2181 error:
2182         device_printf(fc->bdev, "bus manager election failed\n");
2183         fw_xfer_free_buf(xfer);
2184 }
2185
2186
2187 /*
2188  * To candidate Bus Manager election process.
2189  */
2190 static void
2191 fw_try_bmr(void *arg)
2192 {
2193         struct fw_xfer *xfer;
2194         struct firewire_comm *fc = (struct firewire_comm *)arg;
2195         struct fw_pkt *fp;
2196         int err = 0;
2197
2198         xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2199         if(xfer == NULL){
2200                 return;
2201         }
2202         xfer->send.spd = 0;
2203         fc->status = FWBUSMGRELECT;
2204
2205         fp = &xfer->send.hdr;
2206         fp->mode.lreq.dest_hi = 0xffff;
2207         fp->mode.lreq.tlrt = 0;
2208         fp->mode.lreq.tcode = FWTCODE_LREQ;
2209         fp->mode.lreq.pri = 0;
2210         fp->mode.lreq.src = 0;
2211         fp->mode.lreq.len = 8;
2212         fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2213         fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2214         fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2215         xfer->send.payload[0] = htonl(0x3f);
2216         xfer->send.payload[1] = htonl(fc->nodeid);
2217         xfer->hand = fw_try_bmr_callback;
2218
2219         err = fw_asyreq(fc, -1, xfer);
2220         if(err){
2221                 fw_xfer_free_buf(xfer);
2222                 return;
2223         }
2224         return;
2225 }
2226
2227 #ifdef FW_VMACCESS
2228 /*
2229  * Software implementation for physical memory block access.
2230  * XXX:Too slow, usef for debug purpose only.
2231  */
2232 static void
2233 fw_vmaccess(struct fw_xfer *xfer){
2234         struct fw_pkt *rfp, *sfp = NULL;
2235         uint32_t *ld = (uint32_t *)xfer->recv.buf;
2236
2237         printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2238                         xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2239         printf("vmaccess          data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2240         if(xfer->resp != 0){
2241                 fw_xfer_free( xfer);
2242                 return;
2243         }
2244         if(xfer->recv.buf == NULL){
2245                 fw_xfer_free( xfer);
2246                 return;
2247         }
2248         rfp = (struct fw_pkt *)xfer->recv.buf;
2249         switch(rfp->mode.hdr.tcode){
2250                 /* XXX need fix for 64bit arch */
2251                 case FWTCODE_WREQB:
2252                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2253                         xfer->send.len = 12;
2254                         sfp = (struct fw_pkt *)xfer->send.buf;
2255                         bcopy(rfp->mode.wreqb.payload,
2256                                 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2257                         sfp->mode.wres.tcode = FWTCODE_WRES;
2258                         sfp->mode.wres.rtcode = 0;
2259                         break;
2260                 case FWTCODE_WREQQ:
2261                         xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2262                         xfer->send.len = 12;
2263                         sfp->mode.wres.tcode = FWTCODE_WRES;
2264                         *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2265                         sfp->mode.wres.rtcode = 0;
2266                         break;
2267                 case FWTCODE_RREQB:
2268                         xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2269                         xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2270                         sfp = (struct fw_pkt *)xfer->send.buf;
2271                         bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2272                                 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
2273                         sfp->mode.rresb.tcode = FWTCODE_RRESB;
2274                         sfp->mode.rresb.len = rfp->mode.rreqb.len;
2275                         sfp->mode.rresb.rtcode = 0;
2276                         sfp->mode.rresb.extcode = 0;
2277                         break;
2278                 case FWTCODE_RREQQ:
2279                         xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2280                         xfer->send.len = 16;
2281                         sfp = (struct fw_pkt *)xfer->send.buf;
2282                         sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2283                         sfp->mode.wres.tcode = FWTCODE_RRESQ;
2284                         sfp->mode.rresb.rtcode = 0;
2285                         break;
2286                 default:
2287                         fw_xfer_free( xfer);
2288                         return;
2289         }
2290         sfp->mode.hdr.dst = rfp->mode.hdr.src;
2291         xfer->dst = ntohs(rfp->mode.hdr.src);
2292         xfer->hand = fw_xfer_free;
2293
2294         sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2295         sfp->mode.hdr.pri = 0;
2296
2297         fw_asyreq(xfer->fc, -1, xfer);
2298 /**/
2299         return;
2300 }
2301 #endif
2302
2303 /*
2304  * CRC16 check-sum for IEEE1394 register blocks.
2305  */
2306 uint16_t
2307 fw_crc16(uint32_t *ptr, uint32_t len){
2308         uint32_t i, sum, crc = 0;
2309         int shift;
2310         len = (len + 3) & ~3;
2311         for(i = 0 ; i < len ; i+= 4){
2312                 for( shift = 28 ; shift >= 0 ; shift -= 4){
2313                         sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2314                         crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2315                 }
2316                 crc &= 0xffff;
2317         }
2318         return((uint16_t) crc);
2319 }
2320
2321 /*
2322  * Find the root node, if it is not
2323  * Cycle Master Capable, then we should
2324  * override this and become the Cycle
2325  * Master
2326  */
2327 static int
2328 fw_bmr(struct firewire_comm *fc)
2329 {
2330         struct fw_device fwdev;
2331         union fw_self_id *self_id;
2332         int cmstr;
2333         uint32_t quad;
2334
2335         /* Check to see if the current root node is cycle master capable */
2336         self_id = fw_find_self_id(fc, fc->max_node);
2337         if (fc->max_node > 0) {
2338                 /* XXX check cmc bit of businfo block rather than contender */
2339                 if (self_id->p0.link_active && self_id->p0.contender)
2340                         cmstr = fc->max_node;
2341                 else {
2342                         device_printf(fc->bdev,
2343                                 "root node is not cycle master capable\n");
2344                         /* XXX shall we be the cycle master? */
2345                         cmstr = fc->nodeid;
2346                         /* XXX need bus reset */
2347                 }
2348         } else
2349                 cmstr = -1;
2350
2351         device_printf(fc->bdev, "bus manager %d %s\n",
2352                 CSRARC(fc, BUS_MGR_ID),
2353                 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2354         if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2355                 /* We are not the bus manager */
2356                 return(0);
2357         }
2358
2359         /* Optimize gapcount */
2360         if(fc->max_hop <= MAX_GAPHOP )
2361                 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2362         /* If we are the cycle master, nothing to do */
2363         if (cmstr == fc->nodeid || cmstr == -1)
2364                 return 0;
2365         /* Bus probe has not finished, make dummy fwdev for cmstr */
2366         bzero(&fwdev, sizeof(fwdev));
2367         fwdev.fc = fc;
2368         fwdev.dst = cmstr;
2369         fwdev.speed = 0;
2370         fwdev.maxrec = 8; /* 512 */
2371         fwdev.status = FWDEVINIT;
2372         /* Set cmstr bit on the cycle master */
2373         quad = htonl(1 << 8);
2374         fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2375                 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2376
2377         return 0;
2378 }
2379
2380 int
2381 fw_open_isodma(struct firewire_comm *fc, int tx)
2382 {
2383         struct fw_xferq **xferqa;
2384         struct fw_xferq *xferq;
2385         int i;
2386
2387         if (tx)
2388                 xferqa = &fc->it[0];
2389         else
2390                 xferqa = &fc->ir[0];
2391
2392         FW_GLOCK(fc);
2393         for (i = 0; i < fc->nisodma; i ++) {
2394                 xferq = xferqa[i];
2395                 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2396                         xferq->flag |= FWXFERQ_OPEN;
2397                         break;
2398                 }
2399         }
2400         if (i == fc->nisodma) {
2401                 printf("no free dma channel (tx=%d)\n", tx);
2402                 i = -1;
2403         }
2404         FW_GUNLOCK(fc);
2405         return (i);
2406 }
2407
2408 static int
2409 fw_modevent(module_t mode, int type, void *data)
2410 {
2411         int err = 0;
2412 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2413         static eventhandler_tag fwdev_ehtag = NULL;
2414 #endif
2415
2416         switch (type) {
2417         case MOD_LOAD:
2418 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2419                 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2420                                                 fwdev_clone, 0, 1000);
2421 #endif
2422                 break;
2423         case MOD_UNLOAD:
2424 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2425                 if (fwdev_ehtag != NULL)
2426                         EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2427 #endif
2428                 break;
2429         case MOD_SHUTDOWN:
2430                 break;
2431         default:
2432                 return (EOPNOTSUPP);
2433         }
2434         return (err);
2435 }
2436
2437
2438 #ifdef __DragonFly__
2439 DECLARE_DUMMY_MODULE(firewire);
2440 #endif
2441 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2442 MODULE_VERSION(firewire, 1);